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Chapter 2
Step 1: Primary charging
To prepare for the formation of a latent image, the surface of the drum is charged to a uniform negative potential.
The primary charging roller operates in keeping with the photosensitive drum, and directly charges the surface of the drum. The roller is made of conducting rubber,
and a DC bias is applied to charge the surface of the photopositive drum to a negative potential.
Step 2: Laser beam exposure
When the laser beam is scanned over the surface of the photosensitive drum, the charges in the light area are neutralized, forming a latent (static) image.
2.4.1.4 Developing block
LBP5000 / LBP5100
In this block, toner is deposited over the latent (static) image on the surface of the photopositive drum, turning it into a visible image. The machine uses a toner
projection method to develop images in combination with non-magnetic, 1-compeonet toner.
Step 3: Developing
2-10
Exposed area
-100
-500
Primary
charging
(step1)
DC bias
Laser beam
Time (t)
Unexposed area
Laser beam
Primary
Transfer
exposure
charging
(step 4)
(step2)
(step1)
F-2-10
Primary charging roller
Photosensitive drum
F-2-11
Exposed area
Unexposed area
F-2-12
0010-6058
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